Method and apparatus for implementing a pre-implemented circuit design for a programmable logic device is described. In one example, a definition of the pre-implemented circuit design is obtained (504). The definition includes a first physical implementation and a first logical implementation. A second logical implementation is produced (506) for an instance of the pre-implemented circuit design using the first logical implementation. A second physical implementation is produced (510, 512) for then instance of the pre-implemented circuit design using the first physical implementation.